Sewing-machine.



T. H. SEELY.

SEWING MACHINE.

APPucATloN FILED 1AN.29.1914.

Patented Sept. l1, 1917.

4 SHEETS-SHEET l.

@QNI W T. H. SEELY.

- SEWING MACHINE.

APPucATloN mEq 1m29. 1914. -Patendsptl 11, 1917.

4 SHEETS-SHEET 2.

T. H. SEELY. SEWING MACHINE.

APPLICATION man 1m29. 19H.

Patented Sept. 11, 1917.

As SHEETS-skier a.

wht;

lf. (ity T. H. SEELY.

SEWING MACHINE.

APPLICATION men 1m29. 1914.

j l 4mm Patented Sept. 11, 1917.

4 SHEETS-SHEET 4.

'tunisino srrarrns raarnur Enron.

rEOi/rns E. sEELY, or EosroN, uressnoi-insn'rrs, AssreNoi-t ro .UNITEDsneu MACHINERY COMPANY, OE rn'rEEsoN, NEw i CORPORATION OE NEW .'rEEsEY.

narcose.

Application led January 29, 1914-.

To all whom t may concern:

Be it known that L Tiroi/ms il. SEELY, a citizen ot' the UnitedStates,residing at Dorchester, Boston, in the county ot' Suffolk andState ot' Massachusetts, have invented certain new and usefulImprovements in Sewing-Machines; and l do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to sewing machines, and more. particularly tocurved hook needle sewing machines employed in sewing together the solesand uppers ot slices, and known in the art as inseam shoe sewingmachines. f

Curved hook needle sewing machines used in the manufacture of shoes tosew together the soles and uppers are usually provided with a back gagewhich supports the shoel against the backward pull of the needle as theneedle reti-acts from the work. ln the present commercial machines ofthis class the back gage is moved backward away from the shoe before theshoe is ted so that the upper will not be wrinkled by the frictionalContact .ot the back gage therewith during the feed `movement of theshoe.. After the shoe is fed, the back gage is moved forward intocontact with the shoe and is locked in operating position before theneedle retracts so that it may furnish a rigid abutment to resist `theneedle pull. The back gage mechanism of machines ot this classheretofore produced, have been so constructed that the thrust of themoving parts of the back gage mechanism Ais received by the shoe as theback gage strikes the shoe during its forward movement. The result hasbeen that the back gage pounds against the `shoe during the sewingoperation and makes it diliicult tor the operator to hold the shoe inposition.

'ihe objects of the present invention are to improve the constructionand mode of operation ot certain parts of inseam shoe sew` ing machinesand to provide inseam shoe sewing machines with an improved back gagemechanism constructed and arranged to eliminate the pounding ofthe backgage against the shoe.

llilith the above objects in view, the invcntion comprises various`novel and improved yfeatures oi construction, arrange- Specication ofLetters Eatent.

SEWING-MACHINE.

Patented Sept.. ill., 191W.

serial No. 815,127.

ments and combinations ot parts set forth in the following descriptionand pointed out in the claims, the advantages ot which will he obviousto one skilled in the art.

ln the drawings illustrating a machine embodying the various features oithe invention in theirl preferred forms, Figure 1 is a view in sideelevation oit the machine; Fig. 2 is a view in side elevation,illustrating a portion or' the machine looking from the same sidethereof as in Fig. l; Fig. 3 is a view in vertical section of themechanism shown in Fig. 2; Fig. el is a view in side elevation of aportion of the machine looking from the same side of the machine as inFig. l; Fig. 5 is a view partly in side elevation and partly in sectionillustrating particular y the mechanism for locking the back rest slide;Fig. 6 is a sectional view taken substantially on the line 6 6 of Fig.5; 7 is a detail view partly in section illustrating certain parts oit'the mechanism shown in Figs. 5 and 6; Fig. 8 is a detail view inhorizontal section illus- Vtrating a portion of the mechanism forretractingl the welt guide slide; Fig. 9Y is a detail view partly inside elevation and partly in section of the mechanism illustrated inFig. 8; Fig. l0 is a `sectional view taken substantially on 'the line10-10 oil Fig. 9; Fig. ll is a detail view illustrating certain parts ofthe mechanism shown in Figs. S and 9; Fig. 12 isa sectional View takensubstantially on the line lil-12 of Fig. l; Fig. 13 is detail view inside elevation illustrating` particularly the looper and the thread'clamping and thread cutting devices attached to the looper arm; Fig. lilis a view illustrating` the looper and attached parts looking in thedirection of the arrow Fig. 13; Fig. l5 is a view of the'parts shown in13, loe-king in the direction ot the arrow a in said figure; Fig. 1G isa detail view illustrating parts or the welt guide mechanism; and Fig.17 is a detail sectional view taken substantially on the line 17-17 ofFig. 1G.

llhe machine embodying the various teatures oi' the invention asillustrated in the drawings is a shoe sewing machine of the classemploying a curved hook needle and devices cooperating therewith to forma chainstitch, and is particularly designed for se ving the inseams otwelted shoes, although `with; slight changes hereinafter pointedillustrated in the above Eppler patent. In

order to enable the looper tobe heated more efficiently than has beendone heretofore, certain changes have been made in the mechanism'v `forsupporting and actuating the looper, as will now lbe described. Thelooper indicated at 10 vis secured by a screw 12 vtol the lower end ofan arm` 14,' pivoted intermediate` its ends to oscillate in a planeperpendicular to the plane of the needle upon the forwardv end of` aslide 16, which slide Visarrangedy to reciprocate in a. directionsubstantially parallel with the plane ofthe needle. Theupper end of thearm 14 is provided with a socket or bore to receive a stud pro.- jectingfrom a sleeve 18, which formsna 'bearing to receive a rod 20 secured tothe outer end of an arm 2.2 carriedl by a rock shaft 2,4. `A secon'darm26 is secured to the rock shaft 24, and carries a cam roll which engagesa cam groove in a cam disk mounted on the main shaft of the machine.Forward and rearward movements are imparted to the looper'by thereciprocation of the slide 16, and the oscillation ofthe arml/l swingsthe looper in a plane substantially perpen- Adicular to theV plane ofthe needle, the movements of the slide and the arm being relativelytimed`to carry the looper about the needle. VA block 28 is secured to theforward end of the slide 16, and embraces the arm 111as illustrated inFig.. 12. The-arm 14.- is supported on the slide by means of a hollowshaft 30passing through suitable 'bearings in the arms of the block 28and in the centralportion of the arm 1&1. The chamber in they Shaftv- 30does not extend completely through, the rear end of said shaft, and .the

forward end of the chamber is closed by a plug 3,2, screwed into the endofthe shaft.

This chamber is connected 'by a 'coupling 34' with a pipe 36 which leadsfrom a steam chamber in a plate 38 forming a part of the lframe of thehead of the' machine.v The steam is conducted from the generator to thechamber in. the plate 38 by means of inlet pipes 40 and 4t2.V The steamisled from the chamber inthe 'shaft 30. bymeans of an outlet pipe 44connected at itsforward end with said chamber. To hold the hollow shaft30 securely from longitudinal'-movement, a bracket 4.4L is securedtothe' plate 38',andis'provided witha downwardly eX- teiidingarm whichengages a c groove in the 'connection-84. By providinga steam cham ber'inv the shaftl 30"-u`pon which the looper carrying arm is pivote'd, thisarm and the 7'0 lo'opei" eyeis in a proper condition forsewing asatisfactorytight seam.

The mechanism for heating the looper as above described is covered inuan application Serial" No. 133,620, filed Yovember 27th, 1916, whichconstitutes`- a division of the present application.

` The machine is providedavh the usual weltfguide indicated at 48, whichis provided l witlra welt guiding passage and actsV toconducttherweltto; the, sewing point and position itproperly withv relationtothe` shoe. Ags is usual in this; typeo-fmachine, `after the work hasbeen fed the weltguide is.

IDVOVed forward `into engagement with' the .i shoe before the needleadvances to pierce the work, and is held in engagement; withv theV workuntil after theneedle retracts fromgthe work, so that itforms'anwabutment for uthe work to resist the 'backward pullgoftheneedle thread as the needle ,retraetsl -Bef'ore the shoeA is fed theweltl guide-is moved backf out of contact with, the work, so Athat theupper will not be ru'mpled by contact withl the welt guidetherewitlrduringthe feed movement oftheshoe., The welt guide is mountedupon the lower end of acarrie1750 pivoted aty 52 above and--infrontfofthe axis 100 of the needle.' The welt guide isadjustably securedvto the,lowery end of thecarrier by means of a screw 5f1. engaging a yslot'V inthe carrier, and is held from turningl on the screw by mea-nsof a pinV56 engaginga 105 groove in the shank ofthe weltguide, as shown in Fig,2. The welt guide is moved toward and from the' shoe bythe movementsofan actuator 58 which in the construction illustrated consists' ofslide mounted for 110 forward andl rearward movements 'in guides in theframe of the machine, and 'connected at its forward? extremity to thecarrier 50. The" mechanism for moving the actuatorslide58which will behereinafterdescribed, 115 isconstructed and arranged-to move the slideina path having Vdefinite limits. i

The forward end o'f the actuator 'slide' is connected with the carrierlby ad link 60 and a locking device' which acts to lock and un- 120 lockthe forward` endl ofthe link'with rela-V tionto tlij'e carrierduringeach cycle of operations. lllhe Ylink 60 carries vatits forward end apin-'62i towhichis pivoted 'aA locking block 64 engaginginv ayslot 662mthe car- 125 rier 50, The width. ofthe lockingblfock is somewhat lessthan'the width ofthe slotd 66, and' theblock is provided with faces 68arranged at an angle to the side faces of the block, so that when the;block is turned` intoV the position. shown in F ig. 16, the faces 68 ofthe block will frictionally engage the side `faces of the. slotand lockthe carrier to the forward end of the link- 60. By turning the block tothe right, Fig. 16, the locking faces of the block will be-.disengagedfrom the side faces of the slot to unlock the carrier with relation tothe link. In the present embodiment of the invention, as the slide 58 ismoved forward to bring the welt guide into contact with the shoe, thecarrier is locked to the forward end of the link 60 until the slide hasexecuted a portion ofits forward movement, sufficient to move the weltguide nearly into engagement with the engaged in the frame and the otherin the carrier 50, and acts to give the final forward movement to thecarrier to bring the welt guide into engagement with the shoe after thecarrier is unlocked with relation to the link 60. lVith thisconstruction, as the welt guide strikes the shoe the shoe receives thethrust only of the welt guide and` carrier `and that of the spring 70,all of which parts are relatively light so that there is no appreciablepounding of the welt guide against the shoe. Before the needle isretracted from the wo-rk, the welt guide carrier is locked to theforward end of the link 60 so that the work is supported against thebackward pull of `the needle. The carrier re mains locked to the linkduring the retracting movement of the actuatorslide to carry the weltguide away from the shoe so that the welt guide is always retractedsubstantially the same distance from the work, regardless of thethickness of the work, and is not unlocked until the slide has executedpart of its forward movement to move the welt guide into contact withthe shoe, as above described.

The mechanism for turning the locking block to lock and unlock thecarrier with relation to the link 60 and the welt guide actuator slidein timed relation to the other parts of the machine, comprises an arm 72upon which the locking block 64 is formed, said arm having at its rearend a pin or stud 74 ;connected by a spring 76 with a pin 'Z8 carried bya bracket 80. This spring acts to turn the locking block in a directionto lock the carrier to the link 60 and slide 58. To permit the tensionof the spring to be adjusted, the bracket 80 is mounted for verticaladjustment on a pin 82 and is held in adjusted position on the pin by aset screw 811. The arm '72 is swung upwardly or in a direction to unlockthe carrier 50 with relationpto the link 60 and the slide 58 by 96connected lby a link 98 with the fori wardly extending horizontal arm ofa lever 100102 pivoted on a stud 104 and carrying a camroll 106 whichengages the peripheralcam surface of a cam disk mounted en the mainshaft of the machine. The de pression of the arm 100 acts through theconnections described, to lift the link and thereby actuate the arm 72`to unlock the carrier with relation to the link 60 and the slide 58.

' rlhe actuator slide 58 is moved forwardly to move the welt guide intoContact with the shoe by means of a spring 108 coiled about a stud 110and secured at one end to a cap 112 mounted on the stud, sai d springhaving an upwardly extending arm which engages a pin 114 on the slide.The slide 58 is retracted to carry the welt guide away from the shoe bythe rearward movement of a reciprocatory block 116 embracing the slide58 and having an arm 118 pivoted at 120 thereon. This arm is providedwith shoulders 122 and 124i having a stepped arrangement, as shown inFig. 8, of which the shoulder 122 normally engages an abutment 126 onthe slide. rlhe arm 118 is held in the position shown in Fig. 8, withthe shoulder 122 engaging the abutment 126 by a spring 128 connected atone end with a pin secured in the arm 118, and at the other end with apin secured in the block 116. The slide 58 is retracted by theengagement of the shoulder 122 with the abutment 126 as the block 116 ismoved rearwardly, and the slide is advanced as the block 116 is movedforwardly by the action of the spring 108. The mechanism for actuatingthe block 116 comprises a link 130 pivotally connected at its forwardend with the block 116, and at its rear end with the lower arm of alever 132 pivoted on a stud 1311, and provided at the end of its upperarm with a cam roll which engages a cam groove in a cam disk carried bythe main shaft. To permit an adjustment of the limits of the movement ofthe block 116, and of the slide 58, the lower arm of the lever 132 isprovided with a slot 186, and the link 130 is connected with the leverby a pin or bolt 188 ad] ustably secured in this slot. `In theillustrated embodiment of the invention, the slide 58 is not positivelylocked in position during the retracting movement of the needle, but thespring 108, together with the springs 7 0 and 7 6 and the frictionalresistance to the rearward movement of the slide 58, hold the welt guidefrom retraction during the `backward pull of the. needle.

Wien the seam has been-.completed it is desirable that the welt guideshould i be drawn back to the rearof rits normal retracted position sothat it will o'i'er little or no obstruction -to the removal of the shoeand the insertion of another shoe in operating position. In machines ofthe class illustrated, after the shaft has been-stopped at the end ofthe sewing operation, it is usual to reverse the direction of rotationof the shaft so as toI unhook the last loop of thread which has beendrawn through the work by the needle from the needle, and to finallybring the shaft to rest with thel needle in retracted position out of`engagementwith the work. AInthe present embodiment of the invention,mechanism actuated during the reverse rotation of the shaft is providedfor retracting the slide 58 while the lower arm of `the lever132 is inadvanced position, so that the shoulder 124 of they arm 118 will engageinfront of the abutment 126. Then when4 the lower arm of the lever 132swings toward the rear ofthe machine, said i lever will actlto retractthe welt guide to the" rear of Vits normal4v retracted position. In theconstruction illustrated, this mechanismcomprises a lever 140 pivoted ona stud 142, and having a pin 144 mounted upon; its upper end, which pin.engages in a slot 146 in therear end of the slide 58. A coiled spring148 is interposed between the lever 140l and an abutment on the frame ofthe machine, and acts to maintain the lever normally in forwardposition. Alhen theL lever 140 is swung rearwardly, the pin 144 engagesthe rear end Vof the slot 146, and the slide 58 is thereby retracted.The mechanism for swinging the lever comprisesa lever 150 pivoted on astudl 152 and connected with the lever 140 by a link 154 having a slot156 in its forward end in which engages a. pin 158 mounted on the lever140.\

The upper arm of the lever 150 is connected by a link 160 withthe arm1,62 of a lever 162-164 pivoted on the stud 104. `A swing-V ing arm 166is pivotally connected at its rear end with the upper end of the arm164, and is provided with curved facesf168= and 170 for vengagementAwith a collar 172 mounted on the mainl shaft of the machine.

Thecurved faceV 170 on the arm is formed at a greater distance from theaXis of move'- ment of the arm than the curved face 168.

` During the normal operationv of the *ma-2 chine, the arm 166 issupported with' the,

surface 168 of the arm engaging the collar 172,.as shown mfFig. 1. Uponareversal in the direction of rotation of the main;

shaft of the machine, the arm 166 is swung upwardly and moved rearwardlyto bring the curved face .17() into engagement with the collar 172 bythe engagement-of the end face ofy a .recess 174 in the collar with atooth 176 on the arm 166 located between the faces varm'166 is actuated`to engage the curved face 170'withthe collar 172, theV arm 164 of the4lever 16241.64 is swung to the rear, thereby, through themechanis'mfdescribed,

swinging the lever 140 rearwardly toretract the slide 58 with relationto the block 116,A and allowthe lever -1-18 to swing in# wardlyf tobring the' shoulder ,124"in frontof= the abutment 1,26 on "the slide.The slide is ythus retracted while the lower arm of the lever 182 is ini'orwardI position, andfwhen the lower arm of saidV lever swings to therear,'the slide`58 will be 'movedback-a distance to the rear" of itsnormal 'retracted position equal to the distance betweenV the shoulders122 andl 124, so that it will present no obstruction to the removal of.-the shoe, or the insertion of another shoe'in the machine. To releasethe shoulder 124 from the abutment 126, and'allow the slide 58 to moveforwardly to bring theshoulder 126 into engagementwvith theabutment uponY starting the machine, the lever'118 isfprof vided w-ith a Vshoulder180 which, when theblock 1 16 moves forward, engages a pro-- jection 182upon a plate 18,4 secured to the' frame, and the lever 118`is` therebyswung in a direction away from the slidefso asy to permit the slide andthe lever 118 to assume their normal relations.4 Y

186 indicates the r usual back rest with which machinesof this class areprovided. The back rest is mounted on theforward end of a slide 188,andis movedy forwardV by 'thek action of a spring actuatedarm'190wliichengages a pin 1-92`mounted on the slide, as shownV and' described in theabove Eppler patent. Mechanism is provided for locking the slide intimed relationlto the other parts of the machine in substantially the'same manner as is usual in this type of machine. In the presentembodiment of the invention, however, improved mechanism is provided forlockingy the slide. `The Vslide Vlocking mechanism inV the constructionillustrated f comprises a locking lever- 194 pivoted'on a stud,j 196mountedonthe frame, which st ud engages-a Vslot '198in the lever. @Thelever is provided with clamping jaws 200 v and 2Q2fwhich embrace a`flange or rib 204 o-nl the slide 188.- As shown particularlyin Iiigs.v 5yand'7, thev jaw 200is'arranged somewhat in advanceof the jaw202,'so'that Vas the lower end. of the leveris swung forwardlyv from'theposition in which it is shown in lthese figures, thefflange `on theslide will be permitted tomove freely between: the jawsV and that whenthe lowe'rjend of the leverfis swung rearwardly Vvthe 4jaws will bitelagainst the rib 204 and lockthe lever 194 is swung to the rear to lockthe slide by means of a coiled spring 206 attached at one end to theframe, and at the other end to the lower arm of the lever. With thisconstruction, after the lever has been swung into position to lock theslide, any tendency to displace the slide rearwardly will cause thelever to lock the slide more securely. rlhe lever is actuated duringeach cycle of operations to unlock the slide so that the backrest may bemoved forwardly into contact with the shoe by mechanism which comprisesa link 208 pivotally "connected at 210 with the lever, and carrying atits rear end a pin 212 which engages a slot 214 in the lower end ofthearm 102 of the lever 100-102- This is the lever which acts to unlock thewelt guide carrier with relation to the forward end of the link 60, andthe welt guide carrier Ais unlocked with relation to the link andactuator slide, and the back rest is unlocked so that it can moveforward into engagement with the work at the same timen by the action ofthis lever.

Although in the illustrated embodiment of the invention the machine isfitted for sewing together the uppers, welts and insoles of welt shoes,it may be fitted for sewing together the soles and uppers of turnedshoes merely by detaching the welt guide'from the carrier 50 and`substituting a back gage of ordinary construction therefor.V The weltguide in the machine illustrated performs the saine function as the backgage of the machine when fitted for sewing" turned shoes, in that itsupports the shoe against the backward pull of the needle as the needleretracts from the work. The terniback gage is often applied to the weltguide of an inseam sewing machine. Accordingly, in the claims the termback gage is employed and applies to the welt guide of a machine fittedfor welt shoe work as well as to the back gage of a machine fitted forsewing turn shoes.

The machine is provided with a thread cutter byk which the thread maybesevered upon the completion of the seam, and with a thread grippingdevice for holding the free end of the thread during the beginning ofV anew seam. The thread gripping device is secured to the arm of the looperand comprises clamping plates 216 and 218 secured together by screws220, and provided respectively with diverging clamping jaws 222 and 224between which the thread is inserted by the operator in removing a shoefrom the machine. 226 is clamped to the outer face of the clamping plate218 and is provided with a cutting blade at its left hand edge, Fig. 15,across which the thread is drawn to sever the same. It is undesirablethat the thread gripping device should be kept heated to a hightemperature, since when this device is" A thread cutting knife` hot itwill not hold the waxed thread in a reliable manner. ln the constructionillustrated, the thread gripping device is secured to the outer end ofan arm 228 extending out from the looper, as shown in Fig. 15, by ascrew 230 passing through a slot in a projection or `lug on the plate216 and screwed into the end of the arm 228. lll/'ith this construction,the thread gripping device is spaced from the looper and is, therefore,maintained at a low temperature relative to that of the looper. Toenable the thread clamping jaws to be relatively adjusted to suitdifferent sizes of thread, the clamping plate 218 is provided on thesine thereof, opposite or facing the plate 216, with angularly arrangedfaces 232 and 23a, the plate 218 engaging the plate 216 at the meetingpoint of these faces so that it may be rocked about this point toregulate the opening between the thread clamping jaws. llhe clampingplate 218 is adjusted about its point of engagement with the plate 216by `suitable adjustment of the screws 220.

The thread gripping and thread cutting devices described above arecovered in an application Serial No. 69,968, filed January 3, 1916, andconstituting a division of the present application.

It is to be understood that except as defined in the claims thevariousfeatures of the invention are not limited to any particularmachine or type of machine, or to any particular construction andarrangement of parts.

`Having explained the nature and object of the invention, and havingspecifically described a machineA embodying the same in their preferredforms, what is claimed is t 1. A shoe sewing machine, having, incombination, stitch forming devices includ ing a curved hook needle, aback gage, a back gage actuator, means for moving the actuator to movethe back gage toward and from the shoe, connections between the backgage and the actuator comprising locking mechanism acting to lock theback gage with relation to the actuator during the retraeting movementof the needle, during the retracting movement of the actuator, andduring the first portion of the forward movement thereof, and to unlockthe back .gage so as to permit relative movement beactuator, and. tounlock the back gage so as lll@ to permit relative movement between theback gage and the actuator.

3. A shoe sewing machine, having, in combination, stitch forming devicesinclud- `inga curved hook needle, aback gage, a

relation to the actuator during the retractv ing inovementot' theactuator so that the back gage is always withdrawn substantially thesame distance from the shoe, and to unlock the back 'gage so as topermit relative movement between the back gage and the actuator. i

1i. A slice sewing machine, having, in combination, stitch formingdevices includingl a curved hool-z needle, a pivoted back gage carrier,a back gage fixed to Vthe carrier, a back gage actuator, means formoving the actuator to move the back gage toward and from the shoe, andconnections between the actuator and the carrier comprising lockingmechanism acting to lock and unlock the carrier with relation to theactuator during each cycle of operations.

5. An inseam shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage carrier, a back gagefixed to the carrier, a back gage actuator, means for moving theactuator to move the back gage toward and from the shoe, mechanism forlocking and unlocking the carrier with relation tothe actuator,comprising a locking block engaging a slot in the carrier, and means forturning the locking block in the slot to en-V gage its faces with anddisengage them from the'sides of the slot aud thereby lockv and` unlockthe carrier Vwith relation to the ac-l tuator.

6. An inseam shoe sewing machine, having, 1n combination, stitch formingdevicesl including a. curved hookneedle, a back gage, a back gage slide,a lever for retracting the slide, connections between the lever and the'slide comprising a block mounted to recipe recate adjacent the slide andconnected with the lever, an arm movably mounted on the block and havingstepped shoulders for en-' gagement with an abutment on the slide,the

forward otwhich shoulders. normally engages the abutment, means formoving the slide rearwardly with relation to the block prior to theretracting movement of the le! ver, and means ilor inovingsaid arm tobring of the sewing operation.

7. Ali-inseam shoe sewingmachine, hav-,f

slide rearwardly with relation to the block.

prior to the reti-acting movement ofthe lever, means for moving said armto bring the rear shoulder` thereon into position to engagethe abutmenton the slide whereby the movement of the lever to retract the slidemoves the back gage to the rear of its normal retracted position. to,permit `the shoe to be more readily removed at the comple-VA tion of thesewing operation, and means to restore the Varm and the slide to theirnormal relations. Y

8. An inseam shoe sewing machine, having, in combination, stitch formingdevicesV including a curved hook needle, a back gage, a back gage slide,alever for retraeting the slide, connections between the leverand' theslidecomprising a block mounted to reciprocate adjacent the slideand'connected with the lever,ran arm .movably mounted on the block andhaving stepped shoulders ior engagement withan abutment on the slide,the forward of'which Vshoulders normally engages the abutment, meansactuated byla reversal in the direction of rotationV of the main shaftor the machine for moving thel slide rearwardly with relation `'to theblock prior to the retracting movement of the lever, and means to nievethe arm to bring the rear shoulder thereon into position to engage theabutment on 'the slide wherebyy the slide is retracted by theretract-ing movement ol' the lever to move the back gage to the rear ofVits normal .retracted position to permit the slice to be more readilyremovedV upon the completion of the seam.

9. An inseam shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, la back gage,

a back rest, back gage and bacl. rest slides,

, a lever :for locking one of the slides having spaced 'jaws embracing aportion of the slide, and means -tor swinging the lever to causeth'ejaws thereof to bite against the slide and lock it in operatingposition.y

Vl0. An inseam shoe sewingima-chine, having,` in combination, stitchforming devices including aV curved hook needle, a back gage,

a back rest, back gage and backrest slides,

a lever for locking one of the-slides'having spaced jaws embracingaportion of the slide, al xed fulcrum for the lever engaging a slotin'jthe leverso that the lever is pernutted'to lit-D slide along itstulcrum, and means to swing the lever about its tulcrum to cause thejaws thereoi2 to vbite against the slide and lock it in operatingposition.

1l. An inseam shoe sewing machine, having, in combination, stitchforming devices including a curved hook needle, a back gage, baci; rest,back gage and back rest slides, a lever for loclring one of the slideshaving spaced jaws embracing a portion of the slide, a spring forswinging the lever in a direction to cause the jaws to bite against theslide and lool; it, and means forv swinging the lever in the otherdirection during each cycle ot operations to unlock the slide.

12. A shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage, a back gageactuator, means for moving the actuator to move the back gage toward'andfrom the shoe, connections between the back and the actuator comprisinglocking mechanism acting to lock the back gage with relation to theactuator during the retracting movement of the needle, during theretracting movement of the actuator, and during the first portion of theforward movement thereof and to unlock the back gage so as to permitrelative movement between the back gage and the actuator, and means formoving the back gage forwardly with a light pressure independently ofthe actuator into engagement with the shoe.

13. A shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage, a

back gage actuator, means for moving the actuator to move the back gagetoward and `from the shoe, a connection between the back gage and theactuator permitting the back gage to yield with relation to the actuatorai'ter the bach gage engages the shoe, and means tor locking the backgage to move with the actuator during the movement of the actuator.

14. A shoe sewing machine, having, in combination, stitch formingdevices including a curved hook needle, a back gage, a back gage slide,means for moving the slide to move the back gage toward and from theshoe, a connection between the back gage and the slide permitting theback gage to yield with relation to the slide after the back gageengages the shoe, and means for locking the back gage to move with theslide during the movement of the slide.

l5. A shoe sewing machine, having, in combination, stitch formingdevices includ ing a curved hook needle, a back gage carrier, a backgage fixed to the carrier, a back gage actuator, means for moving theactuator to move the back gage toward and from the shoe, a connectionbetween the actuator and the carrier permitting the back gage to yieldwith relation to the actuator after the back gage engages the shoe, andmeans for locking the carrier to move with the actuator during eachcycle of operations.

THOMAS H. SEELY. llitnesses LILLIAN B. Dormi, CHESTER E. ROGERS.

copies o' this patent may be obtained for five cents each, by addressingthe Commissioner of Patente, Washington, D. C.

